<template>
  <div class="createPost-container">
    <el-form
      ref="postForm"
      :model="postForm"
      :rules="rules"
      class="form-container"
    >
      <sticky :z-index="10" :class-name="'sub-navbar ' + postForm.status">
        <CommentDropdown v-model="postForm.comment_disabled" />
        <PlatformDropdown v-model="postForm.platforms" />
        <SourceUrlDropdown v-model="postForm.source_uri" />
        <el-button
          v-loading="loading"
          style="margin-left: 10px"
          type="success"
          @click="submitForm"
        >
          Publish
        </el-button>
        <el-button v-loading="loading" type="warning" @click="draftForm">
          Draft
        </el-button>
      </sticky>

      <div class="createPost-main-container">
        <el-row>
          <Warning />

          <el-col :span="24">
            <el-form-item style="margin-bottom: 40px" prop="title">
              <MDinput
                v-model="postForm.title"
                :maxlength="100"
                name="name"
                required
              >
                Title
              </MDinput>
            </el-form-item>

            <div class="postInfo-container">
              <el-row>
                <el-col :span="8">
                  <el-form-item
                    label-width="60px"
                    label="Author:"
                    class="postInfo-container-item"
                  >
                    <el-select
                      v-model="postForm.author"
                      :remote-method="getRemoteUserList"
                      filterable
                      default-first-option
                      remote
                      placeholder="Search user"
                    >
                      <el-option
                        v-for="(item, index) in userListOptions"
                        :key="item + index"
                        :label="item"
                        :value="item"
                      />
                    </el-select>
                  </el-form-item>
                </el-col>

                <el-col :span="10">
                  <el-form-item
                    label-width="120px"
                    label="Publish Time:"
                    class="postInfo-container-item"
                  >
                    <el-date-picker
                      v-model="displayTime"
                      type="datetime"
                      format="yyyy-MM-dd HH:mm:ss"
                      placeholder="Select date and time"
                    />
                  </el-form-item>
                </el-col>

                <el-col :span="6">
                  <el-form-item
                    label-width="90px"
                    label="Importance:"
                    class="postInfo-container-item"
                  >
                    <el-rate
                      v-model="postForm.importance"
                      :max="3"
                      :colors="['#99A9BF', '#F7BA2A', '#FF9900']"
                      :low-threshold="1"
                      :high-threshold="3"
                      style="display: inline-block"
                    />
                  </el-form-item>
                </el-col>
              </el-row>
            </div>
          </el-col>
        </el-row>

        <el-form-item
          style="margin-bottom: 40px"
          label-width="70px"
          label="Summary:"
        >
          <el-input
            v-model="postForm.content_short"
            :rows="1"
            type="textarea"
            class="article-textarea"
            autosize
            placeholder="Please enter the content"
          />
          <span v-show="contentShortLength" class="word-counter"
            >{{ contentShortLength }}words
          </span>
        </el-form-item>

        <el-form-item prop="content" style="margin-bottom: 30px">
          <Tinymce ref="editor" v-model="postForm.content" :height="400" />
        </el-form-item>

        <el-form-item prop="image_uri" style="margin-bottom: 30px">
          <Upload v-model="postForm.image_uri" />
        </el-form-item>
      </div>
    </el-form>
  </div>
</template>

<script>
import Tinymce from "@/components/Tinymce";
import Upload from "@/components/Upload/SingleImage3";
import MDinput from "@/components/MDinput";
import Sticky from "@/components/Sticky"; // 粘性header组件
import { validURL } from "@/libs/validate";
import Warning from "./Warning";
import {
  CommentDropdown,
  PlatformDropdown,
  SourceUrlDropdown,
} from "./Dropdown";

const defaultForm = {
  status: "draft",
  title: "", // 文章题目
  content: "", // 文章内容
  content_short: "", // 文章摘要
  source_uri: "", // 文章外链
  image_uri: "", // 文章图片
  display_time: undefined, // 前台展示时间
  id: undefined,
  platforms: ["a-platform"],
  comment_disabled: false,
  importance: 0,
};

export default {
  name: "ArticleDetail",
  components: {
    Tinymce,
    MDinput,
    Upload,
    Sticky,
    Warning,
    CommentDropdown,
    PlatformDropdown,
    SourceUrlDropdown,
  },
  props: {
    isEdit: {
      type: Boolean,
      default: false,
    },
  },
  data() {
    const validateRequire = (rule, value, callback) => {
      if (value === "") {
        this.$message({
          message: rule.field + "为必传项",
          type: "error",
        });
        callback(new Error(rule.field + "为必传项"));
      } else {
        callback();
      }
    };
    const validateSourceUri = (rule, value, callback) => {
      if (value) {
        if (validURL(value)) {
          callback();
        } else {
          this.$message({
            message: "外链url填写不正确",
            type: "error",
          });
          callback(new Error("外链url填写不正确"));
        }
      } else {
        callback();
      }
    };
    return {
      postForm: Object.assign({}, defaultForm),
      loading: false,
      userListOptions: [],
      rules: {
        image_uri: [{ validator: validateRequire }],
        title: [{ validator: validateRequire }],
        content: [{ validator: validateRequire }],
        source_uri: [{ validator: validateSourceUri, trigger: "blur" }],
      },
      tempRoute: {},
    };
  },
  computed: {
    contentShortLength() {
      return this.postForm.content_short.length;
    },
    lang() {
      return this.$store.getters.language;
    },
    displayTime: {
      get() {
        return +new Date(this.postForm.display_time);
      },
      set(val) {
        this.postForm.display_time = new Date(val);
      },
    },
  },
  created() {
    if (this.isEdit) {
      const id = this.$route.params && this.$route.params.id;
      this.fetchData(id);
    }
    // Why need to make a copy of this.$route here?
    // Because if you enter this page and quickly switch tag, may be in the execution of the setTagsViewTitle function, this.$route is no longer pointing to the current page
    // https://github.com/PanJiaChen/vue-element-admin/issues/1221
    this.tempRoute = Object.assign({}, this.$route);
  },
  methods: {
    fetchData(id) {
      this.$apis.article.fetchArticle(id).then((res) => {
        this.postForm = res.data;
        // just for test
        this.postForm.title += `   Article Id:${this.postForm.id}`;
        this.postForm.content_short += `   Article Id:${this.postForm.id}`;
        // set tagsview title
        this.setTagsViewTitle();
        // set page title
        this.setPageTitle();
      });
    },
    setTagsViewTitle() {
      const title = this.lang === "zh" ? "编辑文章" : "Edit Article";
      const route = Object.assign({}, this.tempRoute, {
        title: `${title}-${this.postForm.id}`,
      });
      this.$store.dispatch("tagsView/updateVisitedView", route);
    },
    setPageTitle() {
      const title = "Edit Article";
      document.title = `${title} - ${this.postForm.id}`;
    },
    submitForm() {
      this.$refs.postForm.validate((valid) => {
        if (!valid) return false;
        this.loading = true;
        this.$notify({
          title: "成功",
          message: "发布文章成功",
          type: "success",
          duration: 2000,
        });
        this.postForm.status = "published";
        this.loading = false;
      });
    },
    draftForm() {
      if (
        this.postForm.content.length === 0 ||
        this.postForm.title.length === 0
      ) {
        this.$message({
          message: "请填写必要的标题和内容",
          type: "warning",
        });
        return;
      }
      this.$message({
        message: "保存成功",
        type: "success",
        showClose: true,
        duration: 1000,
      });
      this.postForm.status = "draft";
    },
    getRemoteUserList(query) {
      this.$apis.base.searchUser(query).then((response) => {
        if (!response.data.items) return;
        this.userListOptions = response.data.items.map((v) => v.name);
      });
    },
  },
};
</script>

<style lang="scss" scoped>
@import "~@/assets/style/mixin.scss";

.createPost-container {
  position: relative;

  .createPost-main-container {
    padding: 40px 45px 20px 50px;

    .postInfo-container {
      position: relative;
      @include clearfix;
      margin-bottom: 10px;

      .postInfo-container-item {
        float: left;
      }
    }
  }

  .word-counter {
    width: 40px;
    position: absolute;
    right: 10px;
    top: 0px;
  }
}

.article-textarea ::v-deep {
  textarea {
    padding-right: 40px;
    resize: none;
    border: none;
    border-radius: 0px;
    border-bottom: 1px solid #bfcbd9;
  }
}
</style>